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GODIAG CAS4 & CAS4+ OBDII Test Platorm The BMW-CAS4 adapter testing platform is used to detect whether the key that is programmed can work perfectly with the CAS4.  Features:   With this test platform, the BMW CAS4 CAS4 + key can be programmed on the workbench by OBD without opening the machine cover, thus avoiding car power loss and da..